I don't believe there are enough of the high end travelers you mention to support large aircraft operations on the airline side. Flights would have to be heavily subsidized. Many in that class of traveler would arrive by private aircraft.
If the BVI government were serious about this and wanted to keep costs more reasonable there are several new aircraft types that could operate to the US off a 5000 foot runway. The Bombardier C100/300 or the reengined E195 would both work. The costs would be dramatically lower.
G